Bag-turning machine



iii m7 C. C. REESE AND C. C. BROWN.

BAG TURNING MACHINE- APPLICATION FILED MAR. 25. 1920.

1,405,330, r Patentd Jan. 31, 1922.

2 SHEETS-SHEET 1.

FIG!

INVENTOR CHAPLESC 5582. cmupzaappm ait 6 M4 ATTORNEY C. C. REESE AND C. C. BROWN.

BAG TURNING MA CHINE. APPLICATION FILED MAR.25, 1920.

1,405,330 Patented Jan. 31, 1922.

2 SHEETSSHEET 2.

MIMI

11v VENTOR CIMPLES? a PEEfi. CLAUDE C. BIPOMVT A TTORNE Y This invention relates to a I 4 airblast or pneumatic type.

cEARLEsc. nEEsE Aiii) CLAUDE iznown, org QAHFORNIL BAG- URNING MACHINE."

Specification of Letters Patent. Pathfed 3 1922 Application filed March 25, 1920. Serial No. 368,768. 2 u

To all whom it may concern:

Be it known that we, CHARLES C. REESE.

andCLAUDE C. BROWN, citizens of the United States, residing at Crockett, in the county of Contra Costa and State of California, have invented a new and useful Improvement in Bag-Turning Machines, of which the following is a specification. 7,

bag turning machine and especially to. a machine. of th One-of the objects of the present invention is to provide a simple substantial continuously operating machine whereby sacks and similar articles may be rapidly turned, and

Y particularly toprovide means whereby the sacks are successively "subjected to an air blast and thereby invertedor turnedr i Another object of the invention'is to provide a continuously rotating machine with;- means mounted thereon for receiving andsecuring the sacks; further to provide means cooperating therewith for subjecting each sack during'the rotationof the machine to an air blast having: sufficient force to turn the sacks. 7

Another object of the invention is to provide means'for automatically securing the sacks when received and for automatically releasing and discharging the same when turned. r 7

Further objects will hereinafter appear. The invention consists of the parts and the construction, combination and arrangement of'parts-as hereinafter more fully de scribed and claimed, having reference to the accompanying drawings, in which Fig. 1 is a side elevation of the machine.

' *Fig. 2is a plan View of the same. Fig. 3 is a detail view of the cam mechania'n wherebythe air valve is intermittently opened and closed during the rotation of the machine.- i

7 Referring to the drawings in detail,.A*in I dicates a vertically'disposed 'shaft,in this instance supported in upper and lower ournal inembers2'and'3.-- Suitably secured on the shaftdsa circulartable l, and formed in the surfaceofthe table and extending therethroughisaqplurality of evenly sp'acedcircular openings 5. Surrounding each open v ing is an' annular collar 6, and pivotally'supported on: the opposite side of each coller member'is a pair of securingdatohes' 7.- These latches are normally held in retracted position with relation to their, IGSPQCtlVGE;

in s 13. This pipe is connected with a suitable collars by means of springs 8 and they'are automatically projected or swung into engagement with their respective collar members by a pair of cam tracks 9. These cam tracks are disposed below the table and they are suitably supported as'shown, their function being that of automatically securing the sacks when received, and similarly automatically releasing'the same when turned. This feature or function of the machine will howeverlater be described;

The table l is adapted to be continuously rotated and power is transmitted thereto by an electric motor 10 and a worm gear reduc tion drlve such as indicated at 11. This drive transmits a continuous rotary'mov'ementto the shaft A and consequently to the table as this is secured to theshaft and rotates in unison with the same, the tablebeing braced with relation to the shaft by radially disposed "arms 12. [Disposed above the table 4: and at a point where it will register with the'circular' open- 5 formed in the table is an airblast pipe source of air supply, such as a compressor,

blower or similar device, not here shown.

Connected with the pipe by means of a T-fitting 14 is a branch pipe 15' which ter minates in a goose-neck 16-. The end of this a neck also registerswith'the circular openings5 during the rotation of .the tableand its function'is'that of discharging thesacks when turned. Mounted on the pipe 13,

above'the branch connection 15, is a valve 17 of. suitable construction. -(See Figs. 1 and3.) Secured on. theshaft A is a cam member 18 and pivotally mounted on the valve, as at 19, is a lever extension 20 by which the valve is intermittently opened and closed. The inner end of the lever is provided with a rollerEZIand this rides or engages the annular cam member 18. This cam member 1S-pI0V1d6Cl w th as many rises or projections as there are openings 6fin the .table; for instance in this case four, and the valve is therefore automatically, openedyand closed four tiniesdurin'gone revolution of the shaft A'- and. the table 4:" Supported thereby. Y The operation-of the machine-will .beas

follows: Thesacks to be turned are de livered to the machine by an operator standing on one side thereof, for instance'atthe point indicated at- 23." --Th1s position is just inadvance of the cam tracks 9, or at apoint r live-ringthesacks to the machine slips the one openin'g of the valve 17 therefore serves opened end of a sack over an annular collar projecting 6 and then releases it 'to deliver the next sack. The rotation of the table will bring the securing latches into engagement with the cam tracks 9. The latches are therefore swung into locking engagement with the collar and-thereby secures the sack just delivered. The cam tracks 97 extend from the point indicated at 24 to the point indicated at 25 and the sack is thus secured against removal, while the latches are in engagement with the cam tracks. continues to rotate, it will be obvious that a collar member, to which the sack is delivered, will move into register with thepipe 18, similarly that a cam projection 22 will align with the valve leverQO and thereby raise the" same and open the valve 7. The sack will therefore be subjected to a discharge or blast of air from the pipe 13 and the, force thereof is suliicient to "force the sack downwardly through the cam and the opening 5 formed in the table, the saclr when turned assuming" the position shown at 26. (See Fig. The air blast tofiwhich the sack is submitted is onlymomentary and. may

takes place while the sack is in register with the pipe 13. VVaste of air is in this in nner reduced to a minimum as no air is permitted to discharge except when sack is in alignment with the same. A rentinued rotation of the table finally brings the sack to a point where the latches'arc released by the cam tracks 9. The springs '8 connected therewithwill therefore retract the latches, release the sack, and the sac: will simultaneously come into alignment with the b 'anch pipe 15 or the goose-neck 1G in which it terminates. The sack is again subjected to an air blast and as the retaining latches are already released, itcan readily be seen that the edge of the saclr will slip o l? the collar member (3 and will then discharge through the central opening 5 and enter a receiving chute such as indicated at 27. The valve]? controls the air blast both through the pipe 1.3 and the goose-necl 16. This isdue to the fact that it' is possible to turn one sack'and to discharge another atthe same time and two functions: first, that of inverting or turning a sack, and secondly that of discharging a sack already turned. The socuring latches remain open during the remaining' period of rotation and it is during this period that the sacks to be turned are delivered to the table. One or two feeders or operators may therefore be employed as considerable space is left around the edge of the table when it is considered that sacks may be delivered thereto at any'pointinter mediate the position of the goose-neck 16 As the table and the head end of the cam tracks 9. This leaves a large tceding or sack delivering space'andtheretore permits the" use of several operators. This is of importance as it permits speeding up of the machine and consequently the number and quality of sacks handled per minute.

The entire operation of the machine is automatic to the extent that the sacks are automatically secured when delivered, automatically turned, automatically released, and finally automatically discharged. The mechanism employed'is exceedingly simple both in construction and operation and failure or delay due to breakdowns or otherwise may therefore be considered practically eliminated.

Having thus described my invention, what I claim and desire to secure by Letters Patent is i 1. A device of the character described comprising a'rotatable table, means for rotating said table, a plurality of sack receiv-v ing members carried by the table, means for automatically securing and releasing sacks delivered thereto, and pneumaticvmean's for automatically turning the sacks during the rotation of thetable. V 5 v i 2. A; device of the a character vdescribed comprising a rotatable table, means for rotating said table, a plurality. of sack receiv ing members carried by the table, means for. automatically securing and releasing sacks delivered thereto, and means for subjecting each sack to an air blast to turn the same during the rotation of thetable.

3. A device of the character described comprising a rotatable table, means for continuously rotating said table, a plurality of sack receiving members carried by the table, means For; automatically securing sacks delivered thereto, a pipe mounted above the table at a point wherethe sack receiving members will pass beneath the same during the rotation oi the table, said pipe connected with a source of air supply under pressure, a. valve on the pipe, means for automatically opening the valve whenever a sack receiving member aligns with the pipe, and means for releasing and discharging the sacks.

4. A sack turning machine comprising a table, means for transmitting a rotary movement thereto, a plurality of openings formed in the table and extending therethrough, a collar member surrounding each opening, a pair of latches mounted adjacent each collar member, automatic actuating means for holding the latches'in engagement with the table'durin'g a portion of each revolution of the table, means for automatically'moving the latches out of engagement with the collar member during a portion of the revolution of the'table, and automatic actuatedmeans for subjecting each opening in the table to an air blast.

5. A sack turning machine comprising a table, means for transmitting a rotary movement thereto, a plurality of openings formed in the table and extending therethrough, a collar member surrounding each opening, a pair of latches mounted adjacent each collar member, automatic actuated means for holding the latches in engagement with the table during a portion of each revolution of the table, means for automatically moving the latches out of engagement with the collar member during a portion of the revolution of the table, a pipe connected with a source of air sup-ply positioned above the table and at a point where the opening formed in the table will pass beneath the same during the rotation of the table, a valve on said pipe adapted to open and close a flow of air therethrough, and means actuated by the rotating movement of the table for intermittently opening and closing said valve.

6. A sack turning machine comprising a table, means for transmitting a rotary movement thereto, a plurality of-openings formed in the table and extending therethrough, a collar member surrounding each opening, a pair of latches mounted adjacent each collar member, automatic actuated means for holding the latches in engagement with the table during a portion of each revolution of the table, means for automatically moving the latches out of engagement with the collar member during a portion of the revolution of the table, a pipe connected with a source of air supply positioned above the table and at a. point where the opening formed in the table will pass beneath the same during the rotation of the table, a valve on said pipe adapted to open and close a flow of air therethrough, a shaft upon which the table is supported rotating in unison with the table, a plurality of cam members secured on the shaft, one in alignment with each opening in the table, and a lever on the valve and connected therewith, said lever adapted to be engaged by the cams and thereby intermittently open and close the valve.

7. A sack turning machine comprising a table, means for transmitting a rotary movement thereto, a plurality of openings formed in the table and extending therethrough, a collar member surrounding each opening, a

pair of latches mounted adjacent each collar member, automatic actuated means for bold ing the latches in engagement with the table during a portion of each revolution of the table, means for automatically moving the latches out of engagement with thecollar the shaft, one in alignment with each 'opening in the table, a lever on the valve and.

connected therewith, said'lever adapted to be engaged by the cams and thereby intermittently open and close the valve, and-a branch pipe connected with the main air supplying pipe, said pipe terminating at a point above the table where the openings therein will pass beneath the same, said pipe connected with the main pipe at a point below the controlling valve.

In testimony whereof we have hereunto set our hands in the presence of a subscrib ing witness. i

' CHAS. C. REESE.

' CLAUDE 0. BROWN.

Witness:

VALERIE DE REMER. 

